Chevron
Serial breaker of phones
"The admin and maintenance costs of the copper don't increase with line speed"
But isn't line rental used for this? Those R152 are just admin cost for ADSL part so if we want to be honest for coper maintenance Telkom gets R122+R133 in there pocket (line + 386 rental EX VAT)
You are also forgetting that every line needs back haul on the exchange. This also needs to get factored into the price.